.container{
  width: 100%;
  height: 700px;
}
.head{
  width: 100%;
  height: 50px;
  border-bottom: 1px solid #dedede;
  position: relative;
}
.head_left{
  width: 10%;
  height: 50px;
  position: absolute;
  left: 20px;
  line-height: 50px;
  display: flex;
  justify-content: space-between;
}
.head_right{
  width: 20%;
  height: 50px;
  position: absolute;
  right: 20px;
  line-height: 50px;
}
